Which of the following statements about the effect of surface area )z10q*pe 8j klyso sp;and volume on thes 0z81oe;) l *qjysppk cell’s processes is false?

  Which statement bestbapo-+g7h c *w describes stem cells?

  Which is a correct descri8ftry-g8vkv2 /bgwhbq f 3,xx h z7(4pption of the cell type adapted for gas exchange in the 7txbfw8prh2vk xy,- 834g f(bhzv/gqlungs?

  Which of the following explains the limitations4m:gz2 ygw :kfl1 yniohsq;4th4 t3s6 on cell size?

  What is this cell's most likely primary fo3 c1h4-sfmjmopg j8ksfdz,wow 8;5; zs8y z:unction, and where could it be located in a mam sp gk 8m:w3zz,;85ssozd c;1o8- jf oj4mfhywmal?

  Which of the following characteristics zcj7 vr; n,d4lud,riz mwjs; 4o//be, of type I pneumocytes contribute to increasing the rate of g,n z;i o4sbd ,/ ,/lr;jdwrjce4vuz7mas exchange?
I.
Cells are flattened
II.
Secretion of a surfactant
III.
Cover less than 10% of the alveolar surface

  A patient receives a bone marrow transplant from a 36 year old. One of kd x0:egy.q.. k3kaxethe functionsekk.x0.x3kae :.d gqy of these cells is to produce red and white blood cells. What type of stem cells has the patient received?

  Based on the Venn diagram, which identifies cardiac muscle cells and striat5bflgx9 xc/8led musclelcfl8bx x5 /9g fibres?

Below is a diagram o-w zzan/hrayy250 8e jf a motor neuron. Neurons are the longest cells in the human bozya zj rayh0wn28 5-/edy.
1.Explain the factors that limit cell size in humans.
2.Explain how life functions are performed by Paramecium.

Premature babies someo-o2hven;i n 6times suffer from infant respiratory distress syndrome, which could be caused by a lack of sufficient surfactant in the pulmonary alveoli. The diagram below shows two different alvnieo2 -;ohn v6eoli structures.


1.Describe one feature of the surfactant.

2.Suggest a treatment for infant respiratory distress syndrome.

3.Draw a labelled diagram of the structures in an alveolus that are important for gas exchange.

  Which of the following is a reason that emo;/ 7uou* a*sb:fkgitbryonic stem cells are not used in the treatment ut obf7a s* :;go/uk*iof leukaemia?

  The table shows the diameters of red blood cellvl i3dc+4yfp 8s from different organisms. Which red blood cell l4vpic8dy+f 3 will have the highest surface area to volume ratio?

1.Explain how the shape of erythrocytes and cells lininjc-m*op*mvdwb 4j gg7: j 6e11jdt n.jg the proximal convoluted tubulej:g1*e*boj 7d6-p.gm4 j dn vt1jwmcj make these cells more adapted to the functions they perform.

2.Compare and contrast the structure of striated muscle cells and cardiac muscle fibres.

3.Explain how the structure of egg and sperm cells are adapted to their functions.

  Which statements about embryonic stem cells and specialisee* d;a eu 4ynf;1*-nnpyx ebeou 7.no/d cells is/are not trunuayu/b ny.7fen;e * 4e-*; p 1dxoonee?

I. Embryonic stem cells have higher levels of DNA methylation than differentiated cells
II. Specialised cells are more differentiated than embryonic stem cells
III. Most specialised cells and embryonic stem cells both contain the entire genome of an organism

  In humans, which of the following is the correct order from smallest to largesjtd6w2j- 3ajfl c0bl9t?ltcjw- jl ba0 2f96j3d

  Which row in the following table givesl+hss-+cgcmh zt:4 8k the correct disadvantages of the different stem -cs8 4:zcl tsh+mgk h+cell sources for therapeutic uses?

1.Describe how the use of stem cells mayk9etut:( bcww( zb1w- be used to treat type I diabetes in the futurzew9t1(-w ktcbu(:bw e.

2.Explain the factors that limit cell size in humans.

3.Explain how red blood cells and striated muscle fibres are adapted to their function.

Below are diagrams of speq-u -xf;z4arpzo,abdo,7y q dc-u2+ ucialised cells (not to scale).

1.Put these cells in order of size, from the smallest to the largest.

2.Compare and contrast totipotent, pluripotent and multipotent stem cells.